Apparatus for effecting the storing up of speech or signals.



PATENTED MAY 29, 1906.

V. POULSEN. APPARATUS POR EPPEGTING THB STORING UP OP SPEECH 0R SIGNALS.

APPLICATION FILED APB.. 3. 190C. BENEWBD MAB.. 20, 1906.

3 SHEETS-SHEET 1.

PATENTBD MAY 29, 1906.

V. POULSEN.

APPARATUS POR EPPEGTING THE STORING UP OP SPEECH OR SIGNALS.

APPLICATION FILED APR. 3. 1900. ENEWED MAR. 20, 1906.

3 SHEETS-SHEET 2 MM2 @W No. 022,222. y MTENTBD MAY 29, 1006. v. P00LsEN.

APPARATUS FOR EPPEGTING THB STRING UP OP SPEECH 0R SIGNALS.

APPLICATION FILED M103. 1900. RBNEWED MAR. 20. 1906.

3 SHEETS-SHEET 3.

A IINITED STATES PATENT OFFICE.l

vALDEMAR POULSEN, yOF COPENHAGEN, DENMARK, ASSIGNOR, Br MESNE ASSIGNMENTS, To AMERICAN TELEGRAPHONE COMPANY, A CORPORATION OE THE DISTRICT OE COLUMBIA.

APPARATUS FOR EFFECTING THE STORING UP 0F SPEECH 0R SIG'NALS.

'Speccation of Lettera Patent.

' Patented May 2.9, 1906.

Original application filed July'S, 1899, Serial No. 723,198. Divided and this application iiled April 3,1900. Renewed March 20,1906.'

Serial No. 307,068. i

l'o LLL whom it may concern? Be it known that I, VALDEMAR POULSEN, a subject of the King of Denmark, residing at Copenhagen, in the Kingdom o'DenInark, have invented certain new and useful Improveniente entitled an Apparatus for Effect- Ing the Storing'Up of Speech or Signals by Magnetically Influencing Magnetzable Bodies, (for which I have apphed for patents in Austria, April 22, 1899; in Hungary, May 1, 1899 in France, April 26, 1899 in Belgium, April 26, `1899 in Italy, May 2, 1899 in Spain, April 26, 1899; in Portugal,'May 8, 1899; in Luxemburg, July26, 1899; in Switzerland, April 25, 1899; in Russia, April 26, 1899; in Finland, May 24, 1899; in Turkey, June 22, 1899; in Norway, April 26, 1899 in Sweden, in Denmark, December 1, 1898; in England, Aprl 28, 1899; in Canada, June 2 8, 1899; in Braz l, June 20, 1899; in Argentina, July 8, 1899;-in Mexico, July 1:, 1899; in British India, July 7 1899; in Japan, August 4, 1899; in Cape Colony, July 5,1899; in Victoria, December 22, 1899; in NewSouth Wales, December 29, 1899; in South Australia, December 20, 1899; in Queensland, De-

l cember 27, 1899 in Western Australia, -December 19, 1899,; in New Zealand, December 21, 1899 in Germany, December 9, `1898, and

in Clrli, November18, 1899,) of which the fol- .lowingissa specification, ybeing a divisional 1part of thev application, Serial No. 723,198,

led July 8,' 1899.

Tlfs application is a dvision of the application filed Ju`ly 8,1899, Serial No. 723,198.

It has long been possible to transmit messages, signals, &c., by electrical means. p The' present invention represents avery essential advance in this branch of science, as

it provides for receiving and temporarily storing messages and the like by magnetically exciting paramagnetic bodes. The solution of this problem is based on the discovery that a paramagneticbody, such as a steel wire or ribbon, wh.v ch is moved past an electromagnet connected with an electric or magnetic transmitter, such as a telephone, is magnetically excited along its length inexact correspond-y ence with the signals, messages, or s' eech delivered to the transmitter and, furt er, that when the magnetically-excted Wire is again Inovedpast the electromagnet it will repro,-

duce the said signals, messages, or speech in a telephone-receiver connected with the said electromagnet. I

. The invention is of 'great importance for telephonie purposes, as by providing a suit? able apparatus in combination with a telephone communications can be received by the apparatus when the subscriber is absent, whereas upon his return he can cause the communications to be repeated by the appa# ratus. Further, the resent invention will serve as a phonograp and as such will aiord -a simple and efiiclent apparatus.

As is well known, in the usual phonographs the vibrations of air transmitted to a membrane are caused, by means of suitable Inechanical parts, to make indentations in a receptive body, which indentati ons can cause a membrane -to repeatvthe said vibrations by suitable mechanical means.

Mechanical alterations of such bodi es, however, grive rise to disturbing noises, whfoh apart om the expense of such-ap aratus is one of the 'principal reasons why t e phonograph has not come more extensively into use. l 1 In the accompanying drawings one form of this invention is illustrated.

Figure 1 is a front elevation and partial section of the phonographic apparatus. Fig. 2 is a sectionon line ac of Fi 1 looking upward; Fig. 3 is a section on ine y of Fig. 1.

Fig. 3' is a side view of the magnet-holden.

netic body used consists of a steel Wire which is sprally wound on a drum. A

The construction of the apparatus is as follows:

a indicates a casing for a clockwork, one of In the apparatus illustrated the parainagl the wheels of which is indicated bya Upon this casing is supported a stirrup-shaped frame b, the. two arms of which are arranged on opposite sides of'a central s indle c. On

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this spindle is mounted a cylin4 er d, which is held stationary by being fastened to the spinA dle in any suitable way, and the spindle itself l is fixed to the casing. v

e is a bow-shaped iframe consisting of a piece of tubing bent into shape and having its ends connected by an arm e', mounted to turn on the spindle c. The u per end of the bow has a bearing at the mid le of the vframe b by means of a short stud 44, which asses through the bow-and enters the frame The i rotary motion is imparted tothe bow e bmeans of the clockwork in the casingal,which is provided with a wheel 13, engaging with a pinion -12 onthe -hub of the arm e. A fixed ring 48, carrying two annular electrical contacts 49 on its upper surface, is arranged im- -mediately below the -arm e', land said arm is providedv with v Ya spring-mounted pin 23, ada ted to be forced .into connection with' bot Iof said lelectrical -contacts for the urpose of electrically connecting them toget er. Upon lthesurfaceof the cylinder d is wound a-steel wire gin a' uniform helix. On one 'of the arms o'f the bow e is placed a sleeve f, adapted- -to slide freely up and down on the bow, it being held in a fixed relation thereto b means of a tongue f on the sleeve qandslot j .in the bow or in any'other suitable manner. IThis sleeve has -pivoted to it a magnetholder the poles of the magnet therein being indicated by fi.' The magnet-holderis `provided witha itailpiece 7c., which :is normally pressed upon by a spring l, tending to force t'he poles of the magnet out of contact 4with y.the veri-regg. i l l l.

prepresents ya weight adjustably iixed on anarm o, pivoted to the sleeve The arm o .is-connected with the tail 7c by a spring m. Centrifugal iorce'yacting upon the weight tends to throw the "magnet-holder, towar the cylinder d and thus bring the poles of the magnet into contact with the wire g inWhiGh, ration thes ring Z,isrcorripressed, so that-` t ecentriiugal orceceases. Said spring will i Vact upon the tailpiece Vfto remove the poles .l of the' --magnet 'from the wire g, The arm oi has two-extensions o and o, which serve as; ist@ to limit themovement of the weight .p lin,y 'oth directions. The sleeve is also rof vided with .a finger o3, the'jpurpo'se of w- 'ch' will-be explained hereinafter. With refer# ence tothe-magnet lit may be stated-that it may have one or two of lts ole-pieces arrangedto enga ethewire'g. i -a single polep'fiece-is used, the end thereof will be rounded or made wed e shape to fit between two adjacent vconvo u-tions of the wire and in -con- 'tact with both of them, while if the two polepieces are used, asis ShQWll n the drawings, they may make Contact lwith oppositesides 'of .a single convolution Lofgthe wire, the poles being pointed for that-.pimpose, or they may` slide in thed adfacent grec-Ves between thel wires and strad ling. one convolution.

' two Wines -7' 'Ti n-Whh the magnet iris' connected, lead fror'ntheA magnet tlllrmlgh` the open slot in the bow e, thence upward through said hollow bow to at oint lnear the upper end thereof, where t ey ss out through a daring nozzle e2, an 1 thence around the outside of a i7 through a hole in the side thereof, thence upward toa pair of binding-screws g g, arranged on the opposite sides of the bow e at aits middle om't, the wires being slack between said binding-screws and the opening in the drum. From said binding-screws the wires lead on, respectively, to two insulated rings s and t on the short stud 44. Upon each of these rings a contact-s ringo, attached toa block o', rests., and to t ese springs the main wires are respectively connected by means-of the binding-.screws g.l The said drum 17 is mounted yfreely on the up er end of the spindle c, and `on its under s1 e it .haspivoted to it two weighted levers y1'8,eac'h o'f which carries la 'spring forming a brake-.shoe vresting upon thesurface of the-fixed spindle c. These weighted levers are so larranged that centrifuga'l lorce will increase the pressure of the brake-shoes upon lthe jspindle,and so retard,

the rotary motion of the drum 17` 4 y'The drum .also *carries a ypair of win- 16,.w'h'icli have a retardin'g effect -upon 'the ro'tary motion of the drum. The idrum connected with the bow e by a vflexible 'or yielding connection consisting df a `number of Wiresv 15, which are clam-pcd to .the idrum by a conical nut 47, engaging with the 46, and with he bow by a Si-Hef wt 45, engaging with the end of the stud 44. It will now be seen that when the bow e rotates it will carry :the

certain amount of .lagging on :the part of the drum, which will be v permitted by the twistof the wires 15.

. i. e clockwork is u:normally `prevented from rotating by the wei ht of the armature y11.,` which acts u on the rake, as shown in Fig. 1` The bra e is released by the electro- Imagnet 410 in a circuit with battery E and a.

cutout 14,` attached to the lframe ib) T-he a paratus so Tar described is a phono graph, t e operation of which .maynow be referred to. A

Letiit be lassumed that speech or signals alle being.electrically-transmitted over the circuit `containing the magnet fi, that'the sleeve` 1S at thelower end of the bow, and-that the mafchinois started by closing the 'circuit'of magnet 10. The bow e immediately commences to rotate -around the cylinder d. When'the speed is sufficient, centrifugal Iorce uponthe weight .p will cause the' core'ofv magnet .t to be thrown into contact with the .Wll'e gf whereupon the sleeve be caused-to 'slide upward upon the bow, own) v.to the 'spiral arrangement of, .the wire ont e cylinder. the same time the nndnlationso'.- current 1n the circuit of magnet 'i wlivary the magnect the two terminals 38 and 4then falls and stops the clockwork, whereupon spring Z wit draws the poles of the magnet i from wire g, land the sleeve falls by gravity to its lower position. The brake 18 1s adjustable, so that the lagging of the drum 17 behind the bow e will be just suflicient to wind the wires r upon the drum as the slack 1n said wires is created by the u vward movement of the sleevef. To repro uce the message which has thus been magnetically recorded, it is only necessary to put a receivingtele hone into circuit with magnet i instead of the transmitting-tele hone and then start the machine again, w ereupo'n the sleeve Vwill travel up on the bow and the poles of the magnet will traverse the wire g, the successively-varying magnetic condition of which will react upon the core of the magnet and cause the same undulations of current to be sent over the line to the receiving-telephone as were previously sent over the ine to the magnet from the'transmitting-telephone.

The connection of the apparatus to a telephone isshown in Fig. 6. A switch 19 is provided, having four terminals 38, 39, 42, and 43. These terminals'can be connected with each other in three diiierent ways by means of the switch-lever. j In the osition shown in the drawings the two terminals 38 'and 39 are connected together. This position establishes the circuit for the ordinary use ofv the telephone. The current passes throuvh the conductor 35, the conductor 36, to t e telephone, and -through the conductor 37, terminals; 38 Aand 39, back to the conductor 40. The two conductors 35 and 40 constitute the outgoing and return lines.

If the switch-lever is so adjusted as to con- 42, the apparatus can then be used as a honograph, and the transmitting-telephone elonging to the same station can then be used. To clearly explain this, the course of the current should Vbe followed when the terminals 38' and 42 are connected.. When the subscriber turns the crank-handle of his induction apparatus, a

current will pass through the outer coil of the induction-coils R. The current issues from the-telephone and asses over the conductor 36 to the outer coil)of the induction-coils R, then through the terminals 42 to the terminals 38, and over the conductor 37 bac-k to the telephone.- A'current is then induced in the inner coil of the induction-coils R, which will take the followingcourse c It asses from the terminal 20,0f the inner coil ol the inductioncoils R to the electromagnet 22, through the contact 23, conductor 24, terminal 25, back `ed block 41 is released and falls.

Imagnetically excited. The course The contact between -60 and to the inner coil 'of the induction-coils R. The electromagnet 22 is thus excited and the armature 27 attracted, whereupon 'a weight- By this means contact is made between `the-contactpiece 28 and spring 29, whereby the local circuit of the battery E is closed. The circuit is as follows: 'Hl-he current passes from the battery E 'through the electromagnet 10, contact 14, contact-piece 28 spring 29, terminals 30 and 31 and back to battery E. The electromagnet 10, Fig. 1, now attracts the armature 11, so that the clockwork is set in motion and the bow e rotated. The sleeve f, which has been resting upon the pin 23, begins to rise, and the connection between the contactsv 49 is broken. The contact 23 consequently exists only for an instant, so that the circuit of the conductors 20, 21, 22, 23, 24, and 25 is o en during the operation ofthe clockwork an apparatus. Now during the rise of the sleevef and while the electromagnet i, Fig. 3, vis in contact with the steel wire g in the manner described the subscriber-can speak into his transmittenand the spirallywound steel wire g will be corresponding y of the` current in -this case is as followsz It asses from the telephone apparatus throug the conductor 36, the outer coil of the inductionc'oils R, and the terminals 42 and 38, conductor 37, vback to the transmitter. In' exact correspondence' with the matter spoken into the transmitter currents are induced in the innerinduction-coil. Such currents issue IOO from the terminals 20 and 2'1, pass through the electromagnet c', conductor r, terminals 32 and 33, contact-springs 60 and 34, Iterminals 24 25, back to the inner induction-coil.

34 is also effect- Y ed by the falling of block 41.A The electromavnet 'i is magnetized in correspondence with thev matter spoken and transfers its magnetism to the steel wire g. The matter thus fixed can now be transmitted over the line by using the third connection-that is, by connecting the terminals 42 and 43 of the switch 1 9. If, for example, the message,I The 'subscriber is not at home at present, but will return. at four oclock, at whichv time please ring again, is fixed tothe steel wire and a subscriber at some other station calls the former, when the contact-pieces 42 43 are connected together the following circuit will be described: The induced current from the transmitting-station will first pass overthe conductor 35 to the outer coil of the induction-coils R and then through the terminals 42 43, whereu on it will pass through these to the line 40, ec'ause the terminal 43 is connected with the terminal 39. The line-current IOS IIO

will accordingly not pass through the telephone of the receiving-station, but, because the contactf23 is then closed, the electromagnet 22 is again excited by the current generated in the inner coil of the inductioncoils R and the drum d is rotated. The electromagnet i will slide along the fixed wire g and gradually rise with the sleeve f and will 5 be magnetized in accordance with the speech fixed on the wire. The currents induced thereby pass from the electromagnet t, Fig. 6, through the terminals 33, contact-springs 60 and 64, terminals 24 25 to the inner coil of the induction-coils R, and then through the terminals'20 and 21 to the electromagnet t. In the inner coil of the induction-coils R a current is induced correspon'din to. the s eech lfixed to the steel wire, whic current l1 ewise actsn in the outer coil of the induction-coils R and passes thence through the terminals 42, 43, and 39 to the line conductor and back over the conductor 35 into the outer coil of the induction-coils R. The subscriber at the transmitting-station now hears through-his receiver the message fixed to the steel wire and knows that in order to speak with the subscriber at the receiving-station he must call him up at four oclock. y

In order to obliterate the successive magnetic conditions of the steel wire g, Fig. 1, the terminals 30 and 33, Fig. 6, vare connected *i with 61 and 62, whereupon the following connection is made: The current passes from battery E through the terminals 31 and 32 to the electromagnet i, through the terminals 21 20, inner coll of the induction-coils R, ter minal 25, contact-springs 34 60, contacts 33 62 61 30, contact-spring 29, contacts 28 14.,

3'5 electromagnet l0 back to the battery E. The

electromagneti is in this position of the switch A uniformly magnetized by the battery E and dema'gnetizes thereby the steel wire g on the bow e rotating.

For telegraphic purposes the invention can also be 'used with advantage. It is in such case only necessary to receive the current impulses transmitted over .the line in the electromagnet while it is in contact with the paramagnetic body. The paramagnetic body may be moved past the electromagnetic, or vice versa.

Having described my invention, I claim-- 1. An apparatus for storing and reproducing -electrical impulses which consists of the combination of an electric circuit including \an electromagnet, a paramagnetic surface located within magnetlzable range of said electromagnet, means for moving thesurace and 5 5 ,magnet with respect to each other so that dif- 'ferent portions of the surface will be successively presented to the magnet, and means whereby magnetic impressions of said im' ulses are caused to pass to and from said 66 ody through the magnet, substantially as described. l

2. An apparatus Jfor storing and reproducing electrical impulses, whlch consists of. an

electromagnet, a paramagnetic surface w1th- 6 5 in the magnetic influence of said electromagdescribed.

net, means for moving the magnet and surface with respect to each other, so that different portions of the surface will be successively presented to the magnet, and means whereby magnetic impressions of said im@ ulses are caused to pass to and fromsaid ody through the magnet, substantially asp` 3. An apparatus for storing or recording speech and other sounds, which consists ofthe combinationof an electromagnet, means for altering its magnetic condition accordi-nig to said speech or sounds, a paramagnetic su ace within the influence of said ma net and means for moving the surface an magnet with respect to each other, so as to present different portions of the surface to the magnet successively, substantially as described.

4. An apparatus for storing or recording electrical impulses, which -consists of an electromagnet, a circuit over which such impulses flow, in combination with a paramagnetic surfacein contact with the pole orpoles of said electromagnet, and means for moving said magnet and surface, the one past the other.

5. An apparatus for storing or recording electrical impulses, which consists of an electromagnet in a circuit over which such impulses low, .in combination with a strip of paramagnetic material sub'ected to the inuence of said'magnet, -an means for successively presenting diierent parts of the stri to the magnet, substantially as descri ed.

6. An apparatus for storing -or recording electrical impulses, consisting of an electromagnet in a circuit over which such impulses ilow, in combination with a strip of paramagnetic material in the form of a spiral, and means for ysuccessively presenting different parts of the strip to the magnet, substantially as described.

7 An appara-tus for sto-ring or recording electrica-l impulses, consisting of .an electro-A magnet in a circuit over which such impulses flow, in combination with a strip of paramagnetic material in the form of a s iral, and means for holding the pole or po es of the magnet and the strip in contact with each other, while, at the same time, moving them with respect to each other.

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-upon such cylinder, said magnet being adjacent to the surface of the cylinder, and means whereby the pole or polesof the magnet will be dragged v1n contact with the spirall wound strip from end to end thereof, substantially as described.

9. In an apparatus for storing and reproducing electrical impulses, the-combination i 1pole or poles in contact with said magnetizab e body,

of a stationary cylinder, a magnetizable body located upon the surface of said cylinder, a frame arranged to rotate concentrically poles presented to said magnetizable body, a circuit over which said impulses pass and which includes said magnet, andmeans for causing the magnet to traverse in a direction parallel to the axis of the cylinder,

while the frame which supports it is rotated v around it.

10. In an apparatus for storing and reproducing electrical im ulses, the combination.

ofa stationary cylin er, a magnetizable body attached to the surface of such cylinder, a frame arranged parallel to the axis ofthe cylinder, a motor adapted to rotate the frame around the cylinder, an electromagnet car-4 ried-by said frame and having its means for causing the magnet to traverse along said frame and across the face ofthe cylinder, lwhile said frame is being rotated,

and means for automatically stopping the motor when the magnet has ma e its full travel.

11. InV a telephone system, the combination with a subscribers circuit and station, of a paramagnetic body, an electromagnet whose pole or po'les are presented to the said b ody, means for moving the body and magnet with respect to each other, so as to present successive portions of the vbody to 'the p oles of the magnet, and means for throwing the magnet into and out of the subscribers circuit, substantiallly as described.

12. In an apparatus for storing and reproducing electrical impulses, the combination of a paramagnetic body,an electromagnet in a circuit over which such impulses 'iiow, means for causing said body and said electromagnet to lmove with respect, and in close proximity, to each other, so that the relative position of the electromagnet will be gradually shifted from one end to the other of said body, and means for withdrawing said magnet from its working osition and returnimpulses electromagnetically, the combinaltion of an electromagnet in an ,electric circuit' over whichsuch impulses flow, a body,

ing it to its starting position, substantially as described.

13. In an apparatus for storing electrical said body.

, 14. In an apparatus for storing` or recording electrical'impulses re 'resenting speech, sounds or signals, the com ination of a paramagnetic body containing magnetic impressions of said impulses distributed in a line along the same, a' source of constant magnetism and means for subjecting said impressions to said source of constant magnetism for the purpose of imparting a uniform mag- -netic condition to said body.

15. An apparatus for storing or recording yelectrical impulses, which consists of the com- -bination of an electric circuit over'which such impulses iiow and which includesan electromagnet, a body or surface capable of retaining magnetic impressions or conditions and means whereby the impulses ilowi in said electromagnet will "cause correspon ng magnetic impressions o r conditions to bemade at successive pointsin said body or surface.

16. Ana paratus forreproducin'g electrical impulses w `ch have been previously record.

- ed magpetically at successiveipoints in a .mag-

netiza consisting o a circuit conbodly, v A l taining an e ectromagnet, in combinat-ion'jwith means for subjecting said electromagnet successively to the influence of the magnetism stored at the successive points in' saidmagnetizablebody.

' 17. Inan apparatus for storing aniif'ieproducing electrical impulses corresponding'lto speech or signals, the combination Ofjreans for making a magneticjrecord"ofsucli jimpulses. in'v a magnetizable bodyl'aifi electroma net and receiving apparatus, a'jcirc'uit clu 'ng said electromagnet and receiviiigfapparatus and means for causing saidniagnetic record to act upon said elctromguthtdp thereby reproduce the saidi iin'pi'ilsws'V the circuit of said electroma et. `j` f 18. In an apparatus or magnetically' lie-"1" cordin electrical impulses,`tl ie combination? of an e ectromagnet in an electric circuit over which, such' impulses flow, a `magnetizable body adapted to receive magnetic impressions rio' from said electromagnet. corresponding to saidimpulses, a magnetic apparatus possessing orcapable of possessing a constant degree offmagnetism and means for subjecting said magnetizable 'body to saidapparatus to impart a' constant vor' neutral condition to 19. In an apparatus for receiving and recording electrical impulses magnetically, the combination of'a paramagnetic bodyin which the record is made, a magnet having a constant field of force and means whereby that portion of said body containing the record may be. passedthrough or within the .field of force of said magnet, to thereby obliterate the record. 20. An apparatus for reproducing electrical impulses which have been previously magnetically recorded at successive points in a Isa ' included and means for moving the coil and.

magnetizablel-b'ody, consisting of any electromagnetic coil,'a circuit in which said coil is 1 body and a magnet, one ofl these' being movthe relations of sai able in relation to the other, the poles of said ma net being in magnetizable range ofthe sai body, meansfor causing electrical impulses in the circuit of said magnet and an electrically-controlled motor adapted to effect the said relative movements of the body and magnet, substantially as described.

2v2 In an apparatus for storing and reproducing sounds and 'signals and in combination, a paramagneti'c body, an electromagnet having its pole vor poles presented to said body, means lor sup orting and for changing body and magnet with respectto eachother .and transmitting and receiving mechanisms whereby electrical impulses are caused to pass to and from the said ody through said magnet, substantially as described.

' 23.. The combination' of. a body containing magnetic impressions of electrical impulses 'at succeedln points, an electromagnet adapted, to be's'u jected successively to said impressions a'nd a circuit containing said electroma nett' i 24.-' he cornl )'in-ationl of abody having a smooth4x surface permanently chargedI with magnetism of -varying degrees at succeeding` points, an electromagnet presented to sai surface-Sandmeans for moving the body and magnet With respect to each other.

I 25-. .An` apparatus for recording and reprodicing electrical impulses, consistng of a body capable of receivin and retaining maglnetic 1r'npress1ons,jan eectromagnet, a c ir--H ycuit including said ma et, a transmitter adapted to send electrica impulses over said circuit to energize said magnet and cause it to communicate its' magnetism to saidbo'dy',

and a receiver adapted to be actuated by irnpulses produced in said circuit by the reac- .A electromagnet.

tion of the magnetism in said body'upon said 2'6. An apparatusfor storin and reprod'u'cing electrical impulses Whic consists of the combination of an electric circuit includ- 6 3 will be successively presented to the magnet,

essere and means whereby magnetic impressions said impulses are caused to pass to and from said bod through the magnet, substantially as'descri ed.

27. An apparatus for storing and reproducing electrical impulses, which consists of an electromagnet, a homogeneous aramagnetic body. Within the magnetic in yuence of said electromagnet, means for moving' the magnet and body with respect to each other,

so that different portions of the bodywill be successively resented to the magnet, and means Where y magnetic impressions of said impulses are caused to pass to and from said body through the magnet, substantially as described.

28. An apparatus for storing or recording s eech and other sounds, Which consists o tlie combination of an electromagnet, means for altering its magnetic condition according to said speech or sounds, a continuous paramagnetic surface within thel influence o said magnet and means for movin the surface an magnet with respect to eac other', so as to present diHerent portions of the surface to the magnet successively, substantially a's described.

29. An lapparatus for storing-` or recording electrical impulses, which consists of an electromagnet in a circuit over Which such impulses fioW, in combination With a homoeneous strip of aramagnetic material sub- ]ecte'd to the in uence of said magnet, and means for successively presenting' different parts of the strip to the magnet, substantially as describe 30. An apparatus for storing or recording' electrical impulses, which consists of the combination of an electric circuit over which such impulses oW and which includes an electro= ma net, a homogeneous body or surface c'apab e of retaining' magnetic impressions' or conditions and means whereby the impulses flowing in said electromagnet Will causel corresponding magneticimpressions or condi- 4 tions to be made at successive points in said body or surface. 4

31. In an apparatus for storing and re' roducing sounds and signals and 1n combination, a paramagnetic body7 an electromagnet havin its pole or poles transversely. presente to said body, means for supporting and for changing the relation of sal body and magnet With respect to each other and transmitting and receiving mechanisms' whereby electrical im ulses are caused to pass to and from the sai body through said magnet, sub'- sta-ntially as described.

32. The combination of a body having a smooth homogeneous surface permanently charged With magnetism of varying degrees at succeeding points, an electromagnet transversely presented to said surface and means for'moving the body and magnet'with respectto each other.

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I z'j 33. The combination of an electric circuit including a signal-transmitting mechanism and an electromagnet, a body or surface capable of receiving and retaming magnetic impressions or conditions and arranged so that a portion of it is traversed laterally. by

the lines of force of the magnetic iield of said l magnet, andmeans formoving the magnet body relatively to each other to causesuccessive portions of the body to cut the lines of force in the magnetic ield of the magnet.

34. The combination of an electric circuit I includin a signal-transmitting mechanism and an e ectromagnet, a body or surface capable of. receiving and retaining magnetic `lmpresslons'or condltlons and arranged transversely to or -across the lines of force of the magnetic field of said magnet and means for moving the magnet and body relativell to each other to cause successive portions o the body to cut the lines of force in the magnetic eld of the ma et.

' 35. The com ination of a' body capable of receiving and retaining rnagneticimpressions or conditions, an electromagnet arranged so that its field of force is at an angle to the suran electromagnet whose axis or po ar line is presented at an angle to thesurface of said ody 'and means for moving said body and magnet relatively to each other so that said magnetic conditlons or im ressions Will be' successively. carried past t e axial orf' Olarline of the magnet, forthe purpose sety orth.

37. The combination of abody containing a trail of magnetic 'conditions or impressions representing electrical impulses orundulat 1on, an electromagnet Whose axis or polar lm e 1s presented at an angle to the surface of said body, an electric circuit including a receiving apparatus, and means for movin Isaid body. and' magnet relatively'` to eac other so that said magnetic conditions or impress1ons will be successively carried past the axial or polar line of the magnet, for thepurf pose set forth l 38. An apparatus for storing or recording electrical impulses, which consists of the com-l bination df an electromagnetin a circuit over which such im ulses flow, a body or surface capable of retalnin magnetic impressions or conditions, ymeansor moving the said body or surface and said electromagnet relatively to each other so as to present successive portions of said body 'or surface to the action of said electromagnet and-*means whereby the impulses flowing from said electromagnet Wi l cause corresponding magnetic impressions or conditions to be made at successive points in said body or surface by magnetizing the same substantially transversely to the said line of movement. i n

39. An apparatus for storing or recording electrical impulses, which consists of the commagneticimpressions or conditions, means for supporting the said body or surface Within the ield of said ma netic impulses and means-fonmoving said' ody or surface and theJ seat ,fsaid 'magnetic impulses relatively to each other so as to cause successive por-v tions of said 'body to cut the lines of force of said magnetic impulses.

450. A. phonogram or soundrecord c onbination of means for creating by such electrical 1m ulses corresponding ma netic 1 m pulses, a ody or surface capable o retammg sisting'of a suitable body or base having impressed therein or thereupon magnetic conditions or influences corresponding to the sounds. f'

or sound-record consisting of a suita le body or base of steel haying impressed thereinor thereupon-magnet1c conditions or influences corresponding to the sounds or to the air-Waves accompanying the v sounds.'

42. Aphonogram orsound-record. consisting of a paramagnetic body or base in the form of a Wire or strip, haying impressed therein or thereupon magnetic conditlons or iniuences corresponding to the sounds or to the air-Waves accompanying the sounds.

43. A body .or base 'otmagnetic material containing. ermanent magnetic impressions of electric slgnal-currents.

In testimony whereof my hand in the presence of two Witnesses.

l j vALDEMAR roULsEN.

Witnesses: f l

- E. S. HAZEMANN, =1t. J. SCHMIDT.

I have hereunto set 

